Envelope



Mar. 13, 1923.

H. Y. ARMSTRONG ENVELOPE Filed Feb. 11 191B Patented Mar. 13, 1923.

HARRY Y. ARMSTRONG, OF SPRING-FIELD, MASSACHUSETTS, ASSIGNOR OF ONE-HALF TO WILLIAM L. HALL, OF CHICAGO, ILLINOIS;

ENVELOPE.

Application filed February 11, 1918. Serial No. 216,445.

had to the accompanying drawings, and to the characters of reference marked thereon, which form a part of this specification.

This invention relates to a novel envelope, and the purpose of the invention is to produce an envelope of a form in which the blank, subsequently folded and pasted to produce the envelope, may be cut from a web or strip of paper without waste and subsequently folded to produce paste flaps which are gummed to close the envelope without removing or cutting any portion of the material from the blank.

A further object of the invention is to produce an envelope of this character with a minimum amount of material.

Another object of the invention is to produce an envelope, the blanks of which may be cut from a web of paper or like materialas it is unwound from a roll; and the folding and pasting operations to complete the envelope may be effected either by hand or suitable automatic machinery.

The invention consists in the combination and arrangement of the parts shown in the drawings and described in the specification, and is pointed out in the claims.

In the drawings,

Figure 1 illustrates a web of paper, as it is unwound from a paper roll, showing the manner of severing the envelope blanks therefrom.

Figure 2 is an enlarged view of one of the blanks showing the fold lines in broken outlines.

Figure 3 is a front view of the envelope with the front and rear walls folded flat together and the closing flap extended therefrom.

Figure l Figure 3.

Figur 5 illustrates the partially folded envelope with the paste flaps folded in their closing positions.

Figure 6 is a cross section on the line 6-6 of Figure 5.

is a section on the line 4-4 of Figure 7 is a front face view, (ni -the completed envelope, with the closingfiap,

inserted therein. r

Figure 8-is across section .onthe'line 8 8 of Figure 7. e i

As shown in Figure 1, 10 designates a web of paper or like material, which is unwound from a roll 11. The web is trans-.

versely severed along lines 12 to produce the separate blanks 13 outlined in Figure l and shown in Figure 2, the severance lines extending entirelyacross the web. Adjacent severance lines are disposed at oblique angles to each other to produce blanks, each of which is wider at one end than the other.

The blanks may be severed by the useof knives 14 illustrated in Figure 1, the angle.

of presentation of which, to a line extending longitudinally through the web, is alternately changed as the knife is presented. to the web to cut the blanks therefrom in the manner indicated in the full and dotte outline of the knife 14 in Figure 1.

After the blanks are cut from the'web they are transversely scored along the lines 15 and 16, the line 15 dividing the rear wall 17 of the envelope from the front wall 18 thereof, and the line 16, dividing said front wall 18 from a terminal closing flap 19, which closing flap is located at the liar-1 rower end of the blank. The blank is also scored along longitudinally extending lines E2O2O at the sides thereof, which score lines are parallel to each other and lie inside the adjacent oblique edges of the blank to produce tapered side paste flaps 21 and E22, associated respectively with the rear and front walls 17 and 18 of the envelope. Said fold lines 20 extendfrom the extreme end of the wider portion of the blank to the intersection of the fold line 16 with the side inar- I gins of the blank.

When the blank rear wall 17 is folded flat against the front wall 18 of the envelope inthe manner indicated in Figures 3 and 1; the paste flaps 2i and 2 at this time extending laterally beyond the edges of said walls. flaps which have previously: been gummed are thereafter foldedover the wall 18 of tl e envelope and pasted thereto. Paste is applied to the rear side of the paste flaps 21 throughout their length and is applied to the opposite or front side of the flaps 22, as seen in Figure 2. When said flaps 21 and has thus been scored the Said paste Y 22, with paste applied thereto, are thereafter folded upon each other and over the wall 18 of the envelope, the smaller flaps are pasted directly to said front wall, and the wider flaps 21 are folded over the narrower flaps 22 and are pasted thereto in the parts thereof which overlie the narrower flaps and are also pasted to the wall 18 of the envelope in the parts of the flaps 21 which project inwardly beyond the pointed parts of the narrower flaps. This relation of the Wider and narrower paste flaps 2i and 22 is clearly shown in Figure 6.

The closing flap 19'is adaptedto 'be inserted into the envelope over the contents designated as 23 in Flgure 8. By reason of the length of closing flap l9 herein shown, it becomes practicable to use the envelope for second class mail matter, the long fiap folded into the envelope over the contents thereof effectively closing the envelope while at the same time permitting the contents to be readily inspected.

It will be apparent that the design of the construction shown is such as to produce a strong and durable envelope which may be made with a minimum quantity of paper and without waste.

It will be observed by reference to Figures 6 and 7 that the overlying flaps 21,, 22, pasted to one wall of the envelope and pasted one flap to the other, produces an exceedingly strong joint or connection between the walls, and with the use of a small amount of stock. These envelopes are well adapted to be made in large sizes for carrying merchandise and bulky second class mail matter and the reliable connections between the ends of the envelope walls is of con.- siderable importance. A further advantage of making the blanks with continuous tapered edges is that said edges can be cut by a very simple cutting device, illustrated in full and dotted lines in Figure 1.

I claim as my invention:

1. An envelope blank wider at one end than the other and uniformly tapered at its side edges, transverse score lines to produce front and rear wall sections and a terminal. closing flap section, the latter at the narrow end of the blank, and longitudinal score lines at the sides of the blank parallel to each other and lying inwardly from and at oblique angles relatively to said side edges to produce tapered paste flap sections at the ends of both front and rear wall sections said longitudinal score lines terminatingat the transverse score line which divides the closing flap section from the adjacent wall section.

2. An envelope blank wider at one end than the other and uniformly tapered at its side edges, transverse score lines toproduce front and rear wall sections and a terminal closing flap section, the latter at the narrow end of the blank, and longitudinal score lines at the sides of the blank parallel to each other and lying inwardly from and at oblique angles relatively to said side edges to produce tapered paste flap sections at the ends of both front and rear wall sections, said longitudinal score lines terminating at the transverse score line, which divides the closing flap section from the adjacent wall section, there being'paste applied througlr out the length of the tapered flap sections of each wall section, with the paste on one of the pair of flap sections of one wall section at the side of the blank remote from the paste applied to the other pair of'flap sections'. v

3. An envelope blank wider at one end than the other and uniformly tapered at its side edges, transverse score linesto produce front and rear wall sections, and a terminal closing flap section of a width at least as great as half the width ofa wall section, and at the narrower end of the blank, said blank being also provided within its tapered margins with score lines parallel to each other to produce tapered flaps, the wider portions of which are at the Wider end of the blank and the narrower portions of which terminate at points at the junctions therewith of the score line which divides the closing flap section from the adjacent wall section, the portions of the tapered flaps abreast the front and real wall sections, respectively, bearing paste throughout their length, with the paste of the flap sections of the two walls, respectively, on opposite sides of. the blank.

4. An envelope comprising rectangular front and rear non scored walls of equal dimensions and a freely operable closing flap, said front and rear walls being each providedat their ends with tapered paste flaps, one of which is narrower than, and constitutes a symmetrical extension of, the other, and which are interfoldcd to he one over the other and both over one wall, with the wider rnds of said flaps overlyingand pasted to the parts of the narrower flaps and to one of said walls, said flaps bearing paste throughout their length on respectively opposite sides thereof.

In testimony whereof I claim the foregoing my invention, 1 hereunto append my signature at Springfield, lllassachusetts, this 6th day of February, 1918.

HARRY Y. ARMSTRGNG"; 

